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Planning application

39 Wilton Crescent London SW1X 8RX

Granted Westminster 25/05991/FULL Full Planning Permission Application

Works: Extension Loft or dormer Windows or glazing

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Erection of rooftop plant enclosure behind dummy mansard including new terrace with new stone paving; access stair with glazed access hatch; two flush walk-on rooflights; extension of mansard to front elevation to form parapet and conceal terrace; balustrade to rear elevation; raising of party wall to front of No. 40; replacement of all existing AV and satellite antennas; new security CCTV camera overlooking the access hatch.

As published by the council, reference 25/05991/FULL

Application record

Reference
25/05991/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
22 Aug 2025
Validated
8 Sep 2025
Decided
23 Oct 2025
Ward
Knightsbridge & Belgravia
Decision by
Delegated Decision
Postcode
SW1X 8RX

Site history

Applications at this address on the Westminster register

This site has had 8 applications since 2025: 6 approved, 0 refused.

  • 25/09301/LBC Granted

    39 Wilton Crescent London SW1X 8RX

    Erection of closet wing from lower ground to third floor; demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level; erection of balcony and french doors at rear ground floor level; alterations at roof level in association with its use as a terrace; installation of plant equipment within enclosures at roof level and to rear; extension of lift to fourth floor; excavation of basement under rear courtyard, infill courtyard extension with terrace in association with use of building as single dwelling.

    Decided 19 May 2026 Heritage and listed buildings
  • 25/09300/FULL Granted

    39 Wilton Crescent London SW1X 8RX

    Erection of closet wing from lower ground to third floor; demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level; erection of balcony and french doors at rear ground floor level; alterations at roof level in association with its use as a terrace; installation of plant equipment within enclosures at roof level and to rear; extension of lift to fourth floor; excavation of basement under rear courtyard, infill courtyard extension with terrace in association with use of building as single dwelling.

    Decided 19 May 2026 Full applications
  • 25/05992/LBC Granted

    39 Wilton Crescent London SW1X 8RX

    Erection of rooftop plant enclosure behind dummy mansard including new terrace with new stone paving; access stair with glazed access hatch; two flush walk-on rooflights; extension of mansard to front elevation to form parapet and conceal terrace; balustrade to rear elevation; raising of party wall to front of No. 40; replacement of all existing AV and satellite antennas; new security CCTV camera overlooking the access hatch.

    Decided 23 Oct 2025 Heritage and listed buildings
  • 25/05985/FULL Withdrawn

    39 Wilton Crescent London SW1X 8RX

    Erection of closet wing from lower ground to third floor; demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level; erection of balcony and French doors at rear ground floor level; alterations at roof level in association with its use as a terrace; installation of plant equipment within an enclosure at roof level and an MVHR unit in the rear courtyard; extension of existing lift to fourth floor; and excavation of basement under rear courtyard, infill courtyard extensionand works to front and rear elevations in association with use of building as single dwelling. (Linked with 25/05986/LBC)

    Decided 27 Oct 2025 Full applications
  • 25/05986/LBC Withdrawn

    39 Wilton Crescent London SW1X 8RX

    Erection of closet wing from lower ground to third floor; demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level; erection of balcony and French doors at rear ground floor level; alterations at roof level in association with its use as a terrace; installation of plant equipment within an enclosure at roof level and an MVHR unit in the rear courtyard; extension of existing lift to fourth floor; and excavation of basement under rear courtyard, infill courtyard extension and works to front and rear elevations in association with use of building as single dwelling. (Linked with 25/05985/FULL)

    Decided 27 Oct 2025 Heritage and listed buildings
  • 25/05984/FULL Granted

    39 Wilton Crescent London SW1X 8RX

    Variation of Condition 1 of planning permission dated 23 February 2016 (RN: 15/08955/FULL) for the: 'Erection of closet wing from lower ground to third floor to accommodate lift. Demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level. Erection of balcony and French doors at rear ground floor level. Alterations at roof level in association with its use as a terrace. Installation of plant equipment within an enclosure at roof level. Excavation of basement under rear courtyard'. Namely, retention of existing lift shaft, modifications to fenestration arrangement on rear, increase in height of two storey rear extension.

    Decided 5 Nov 2025 Full applications
  • 25/05926/LBC Granted

    39 Wilton Crescent London SW1X 8RX

    Erection of closet wing from lower-ground to third floor, reconstruction of existing rear two-storey extension at lower-ground and ground level, erection of balcony and French doors at rear ground level, basement extension, levelling of ground floor and raising of rear roof level, replacement of lower-ground concrete slab and associated damp proofing, alterations to services throughout, internal alterations associated with lift and associated refurbishment alterations.

    Decided 5 Nov 2025 Heritage and listed buildings

Timeline

Dates from the published record

  1. 22 Aug 2025

    Received by Westminster

  2. 8 Sep 2025

    Validated

    Checked as complete and ready for consideration.

  3. 23 Oct 2025

    Decision issued: Application Permitted

  4. 21 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Montagu Evans LLP Agent, registered in London

Active · incorporated 2005 · London

1,345 applications on PlanIndex · across 131 councils · 97% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

Plans, drawings, consultee responses and the officer's report

17 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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Open the documents

What this grant of permission means

Westminster granted permission on 23 October 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 39 Wilton Crescent London SW1X 8RX

    25/09301/LBC Submitted 23 Dec 2025 50 yards away

    Erection of closet wing from lower ground to third floor; demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level; erection of balcony and french doors at rear ground floor level; alterations at roof level in association with its use as a terrace; installation of plant equipment within enclosures at roof level and to rear; extension of lift to fourth floor; excavation of basement under rear courtyard, infill courtyard extension with terrace in association with use of building as single dwelling.

    Granted Heritage and listed buildings Extension Demolition +1 25 docs
    Domestic
  • 39 Wilton Crescent London SW1X 8RX

    25/05985/FULL Submitted 21 Aug 2025 50 yards away

    Erection of closet wing from lower ground to third floor; demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level; erection of balcony and French doors at rear ground floor level; alterations at roof level in association with its use as a terrace; installation of plant equipment within an enclosure at roof level and an MVHR unit in the rear courtyard; extension of existing lift to fourth floor; and excavation of basement under rear courtyard, infill courtyard extensionand works to front and rear elevations in association with use of building as single dwelling. (Linked with 25/05986/LBC)

    Withdrawn Full applications Extension Demolition +1 36 docs
    Domestic
  • 39 Wilton Crescent London SW1X 8RX

    25/05986/LBC Submitted 21 Aug 2025 50 yards away

    Erection of closet wing from lower ground to third floor; demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level; erection of balcony and French doors at rear ground floor level; alterations at roof level in association with its use as a terrace; installation of plant equipment within an enclosure at roof level and an MVHR unit in the rear courtyard; extension of existing lift to fourth floor; and excavation of basement under rear courtyard, infill courtyard extension and works to front and rear elevations in association with use of building as single dwelling. (Linked with 25/05985/FULL)

    Withdrawn Heritage and listed buildings Extension Demolition +1 29 docs
    Domestic
  • 39 Wilton Crescent London SW1X 8RX

    25/05992/LBC Submitted 22 Aug 2025 50 yards away

    Erection of rooftop plant enclosure behind dummy mansard including new terrace with new stone paving; access stair with glazed access hatch; two flush walk-on rooflights; extension of mansard to front elevation to form parapet and conceal terrace; balustrade to rear elevation; raising of party wall to front of No. 40; replacement of all existing AV and satellite antennas; new security CCTV camera overlooking the access hatch.

    Granted Heritage and listed buildings Extension Loft or dormer +1 16 docs
  • 39 Wilton Crescent London SW1X 8RX

    25/05984/FULL Submitted 21 Aug 2025 50 yards away

    Variation of Condition 1 of planning permission dated 23 February 2016 (RN: 15/08955/FULL) for the: 'Erection of closet wing from lower ground to third floor to accommodate lift. Demolition and reconstruction of existing rear two storey extension at lower ground and ground floor level. Erection of balcony and French doors at rear ground floor level. Alterations at roof level in association with its use as a terrace. Installation of plant equipment within an enclosure at roof level. Excavation of basement under rear courtyard'. Namely, retention of existing lift shaft, modifications to fenestration arrangement on rear, increase in height of two storey rear extension.

    Granted Full applications Extension Demolition +1 37 docs
  • 39 Wilton Crescent London SW1X 8RX

    25/05926/LBC Submitted 20 Aug 2025 50 yards away

    Erection of closet wing from lower-ground to third floor, reconstruction of existing rear two-storey extension at lower-ground and ground level, erection of balcony and French doors at rear ground level, basement extension, levelling of ground floor and raising of rear roof level, replacement of lower-ground concrete slab and associated damp proofing, alterations to services throughout, internal alterations associated with lift and associated refurbishment alterations.

    Granted Heritage and listed buildings Extension Windows or glazing 33 docs

In Westminster

  • 26/07528/FULL Awaiting decision

    69 Eaton Place London SW1X 8DF

    Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

    Received 5 Nov, published by the council 6 Nov 2026 Full applications
  • 26/05200/FULL Decided

    1 The Court House 165 Seymour Place London W1H 4PU

    Installation of waterproofing system to the existing lead flat roofs

    Received 3 Aug, published by the council 28 Aug 2026 Full applications
  • 26/07521/FULL Awaiting decision

    Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

    Installation of one external condenser unit

    Received 4 Nov, published by the council 6 Nov 2026 Full applications
  • 26/07508/FULL Awaiting decision

    Buckingham Palace The Mall London SW1A 1AA

    Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

    Received 4 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07472/FULL Awaiting decision

    Flat 3 82 New Cavendish Street London W1G 9TA

    Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

    Received 3 Nov, published by the council 6 Nov 2026 Full applications